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New Jersey 2007 LULC
• In June 2010, the NJ DEP released the 2007 update to the NJ Land Use/Land Cover data.
• Data now spans 21 years, from 1986 to 2007.• Dr. Hasse and Dr. Lathrop from CRSSA (Rutgers)
analyzed the data, comparing it to previous time periods to study the urban growth patterns of the overall time period.
• This is the third iteration of the analysis.
Landscape Change
2002 Land Use
2007 Land Use
2002 Land Use
2007 Land Use
2007 Land Use
Dynamic Landscape Change
Urban Agriculture Forest Water Wetlands Barren -
200,000
400,000
600,000
800,000
1,000,000
1,200,000
1,400,000
1,600,000
1,800,000
1986
1986
1986
1986
1986
1986
2007
2007
2007
2007
2007
2007
2007Urban surpasses
Forest
In 21 years’ time:323,811 acres of urban growth- 57% is residential, 2/3s large lot housing178,337 acres of farmland loss114,912 acres of forest loss52,294 acres of wetlands loss
508,681 acres of impervious surface in New Jersey.Increasing at a rate of 4,270 acres per year.
NJ Land Change Viewer
Requirements:• Animated• Comprehensive• Quick and responsive• Cheap
Animation
• To convey the change graphically, we felt the map had to be animated.
• Animation was achieved by altering the tiled layers’ opacity in sequence.
• Attractive, flicker-free animated map!
Many Layers in the Report
Map Responsiveness
• The Land Change Viewer relies on pre-rendered map tiles.
• The complexity of the data and the need to show 4 or 5 time period renderings would cause considerable delay if each view was rendered from GIS data.
Land Change Viewer
Land Change ViewerGoogle Maps
Base MapsBing MapsBird’s Eye
Amazon S3
CloudFrontGeoServer
TileCache
Tile Rendering & Distribution
• CloudFront prevents rendering on-the-fly
• For the extent of NJ, (z8-15) approximately 60,000 tiles needed to be created.
• Each animation frame was one set of tiles.
• 1.5 million tiles had to be generated.
On the Cheap
• This iteration of the project had little to no funding.
• Would not have been possible to implement without Amazon Web Services.
• AWS bill at the time of release was about $60, and only about $100 by the end of 2010.
Next Steps
• GeoLab was awarded a $7,500 AWS grant to support further development.
• Extend the Viewer to include metrics at the County and Municipal level.
• Reshape the viewer into a tool for aiding local-level planning.
• Use ArcGIS Server on AWS as a gateway into the data.
“Changing Landscapes”Report & Maps Available online
http://gis.rowan.edu/projects/luc
• John HasseRowan [email protected]
• Rick LathropRutgers [email protected]
• John ReiserRowan [email protected]
